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  #1  
Old 07-21-2003, 11:29 PM
monkeyseedo
 
Join Date: Aug 2002
Location: ATLANTA, USA
Posts: 15
1987 300e A/c Push Button Problem

WELL DONE PEOPLE, PLS I HAVE 1987 300E ,RUNNING PERFECT A/C EVEN WORKS,PROBLEM IS RECENTLY,THE A/C WOULD COME ON BY ITSELT,WILL PUSH BUTTON TO 0 TO MAKE IT STOP BUT WILL IMMEDIATELY COME ON AGAIN ,THIS IS DRIVING MY WIFE NUTS, IAM THINKING IS IT POSSIBLE TO WIRE THE 0 BUTTON TO A SWITCH U KNOW LIKE IN OTHER SIMPLE CARS OR SHOULD I START LOOKING FOR 2ND MORTGAGE PLS HELP
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  #2  
Old 07-22-2003, 12:16 AM
wjm's Avatar
wjm wjm is offline
Statman
 
Join Date: Dec 2000
Location: Suburban Detroit, MI
Posts: 692
No mortgage needed.

Let's say you need to replace. First, get pull the wood cover off and get the model number of the unit. Then check the junk-yards.

I purchases a working replacement for $50+ship using www.car-parts.com. Since you are in Maryland, you will find at least a dozen there available for $125 or less.
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  #3  
Old 07-22-2003, 12:49 AM
Registered User
 
Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
The buttons are sticky. On the 300TE, one of the POs children appearantly opened a 2-liter bottle of ginger ale in the car after dropping it -- there is sticky stuff everywhere and I can smell ginger ale when I remove the wood console trim.

One of the things that got sprayed is the pushbutton unit, and you have to hold the buttons down to get it to change modes -- the button for "normal" and "economy" both stick, so when you change to something else, you have to hold the other button down until those pop out.

You can take it apart and spray some contact cleaner (the alcohol based ones ONLY, please, not carb cleaner, it will melt everything!) and see if that cures the problem.

Otherwise, it's a replacement PBCU, new or used.

Peter
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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
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  #4  
Old 07-22-2003, 03:07 AM
Senior Member
 
Join Date: Mar 2001
Location: Accokeek, MD
Posts: 683
I took mine apart and fixed it. Has something to do with the temp setting wheel if I recall correctly. They can be fixed. Maybe do a search. I believe I did a post or two on how to repair the unit.
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1993 190E 2.3
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  #5  
Old 07-22-2003, 12:58 PM
monkeyseedo
 
Join Date: Aug 2002
Location: ATLANTA, USA
Posts: 15
PUSH BUTTON

THANKS EVERY ONE FOR YOUR REPLIES, SOMETHING I HAVE TRIED IS STICKING IT IN POSITION USING TOOTH PICK AND IT STAYS OFF ,SO IA M THINKING IS THIS THE CASE OF WEAK SPRINGS INSIDE THE UNIT, CAN THE SORING BE REPLACED, CAN SOMEONE TELL ME HOW TO REPAIR THE UNIT ETC ,,THANKS
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  #6  
Old 07-22-2003, 05:04 PM
pesuazo's Avatar
Registered User
 
Join Date: Oct 2002
Location: Near Raleigh, NC
Posts: 580
Solution to same problem

DO NOT SHOUT. It is rude and offensive.
Remove the CCU (Climate Control Unit), and resolder all button connections to circuit board.
Do a search, all instructions have been posted many times.
Good Luck, and post the success story.
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